fall in, flop, break down, break up, break, burst, crumble, tumble, give, crash, more...

expand, strengthen, build, stabilize, fortify

economic collapse, structural collapse, social collapse, emotional collapse, mental collapse, physical collapse, more...

economic, complete, total, sudden, circulatory, final, cardiovascular, financial, general, nervous, imminent

crash down,   crashing down,   fall together,   to fall down,   fail; stable,   slump down,   to fall into,   to cave in,   slump over,   sink or fail